PMID: 9535519Apr 16, 1998Paper

A rate-controlled indentor for in vivo analysis of residual limb tissues

IEEE Transactions on Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society
A P PathakT E Prieto

Abstract

A tissue tester was designed to enable rate-controlled indentation of the bulk soft tissues of lower extremity residual limbs. The tissue tester employs a digital linear actuator that implements rate-controlled indentation, and a load cell that measures the reaction force resulting from tissue indentation. Viscoelastic phenomena such as preconditioning, hysteresis and force relaxation can be assessed, and the effect of varying indentation rates on soft tissue stiffness can be investigated. The device accommodates indentor excursions up to 30 mm, indentation at rates of 0 to 10 mm/s, reaction forces up to 44 N, and multiple loading/unloading cycles. The tissue tester is controlled via a notebook personal computer with a PCMCIA data acquisition card. The tissue testing trials are automated and the entire test system is portable and amenable for use in a clinical or research environment. System output consists of force-displacement curves from cyclic loading, and force-time curves following ramped-step indentation. The mean indentor positioning error was 0.071 (+/-0.75)% of the desired displacement. This error varied as a function of indentation and was approximately independent of the indentation rate. Indentation rates were accu...Continue Reading

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Citations

Nov 30, 2000·Medical & Biological Engineering & Computing·Y P ZhengA F Mak
Apr 21, 2001·Journal of Manipulative and Physiological Therapeutics·G N KawchukJ Dmowski
Sep 25, 2002·Medical Image Analysis·M KauerM Bajka
Apr 17, 2008·Journal of Biomechanical Engineering·Jacob RosenBlake Hannaford
Apr 27, 2010·Annual Review of Biomedical Engineering·Arthur F T MakEric W C Tam
Jan 8, 2009·IEEE Transactions on Bio-medical Engineering·Michael J HoffmannM Barbara Silver-Thorn
Sep 25, 1999·IEEE Transactions on Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·M B Silver-Thorn
Jul 28, 2001·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·J W KlaesnerM J Mueller
Dec 11, 2002·Archives of Physical Medicine and Rehabilitation·Joseph W KlaesnerMichael J Mueller
Jun 1, 2016·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Arthur PetronHugh Herr
Jun 8, 2004·Journal of Biomechanical Engineering·Ergin Tönük, M Barbara Silver-Thorn
Feb 25, 2020·Journal of the Mechanical Behavior of Biomedical Materials·Jee Chin Teoh, Taeyong Lee

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